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Rectangular black lithium-ion laptop battery, 11.55V 41.7WH

TOPKTEAM

TOPKTEAM BK03XL laptop battery 11.55V 41.7WH for HP Pavilion 14-ba

SKU CH-BFNP-ZPZE8

Lithium-ion 11.55 V 41.7 Wh replacement battery compatible with HP Pavilion x360 14-ba series

  • Battery TypeLithium-Ion
  • 55V 41.7WH lithium-ion cell powers your Pavilion x360 14-ba
  • Direct replacement for original HP part numbers 916366-421 916366-541 916811-855 BK03XL HSTNN-LB7S HSTNN-UB7G
  • New condition battery installs without adapters or modifications
  • Black finish matches the chassis of supported Pavilion models
  • 7WH capacity restores full-day runtime for work and study

Replacement battery for Pavilion x360 14-ba

This 11.55 V lithium-ion pack supplies 41.7 Wh and matches the original BK03XL, HSTNN-UB7G and HSTNN-LB7S part numbers. It is built for owners of the Pavilion x360 14-ba series who need a direct drop-in replacement. The black casing follows the factory form factor so the laptop closes and balances exactly as before.

Black lithium-ion pack with factory footprint

The brick-shaped cell block uses the same mounting points and connector orientation as the original unit, so installation only requires a screwdriver and a few minutes. No cable rerouting or chassis modification is involved, and the battery sits flush once secured. The 11.55 V output aligns with the system power rail, preventing voltage-mismatch warnings at boot.

Limited to Pavilion x360 14-ba compatible models

This pack only supports the listed part numbers such as 916366-421, 916366-541 and 916811-855, so it will not fit other HP families or earlier Pavilion generations. Buyers who need a battery for a different screen size, a non-convertible chassis or a newer model series must source the correct part for that platform. The 41.7 Wh capacity is fixed by the cell count and cannot be upgraded within this housing.

Highlights

  • 55V 41.7WH lithium-ion cell powers your Pavilion x360 14-ba
  • Direct replacement for original HP part numbers 916366-421 916366-541 916811-855 BK03XL HSTNN-LB7S HSTNN-UB7G
  • New condition battery installs without adapters or modifications
  • Black finish matches the chassis of supported Pavilion models
  • 7WH capacity restores full-day runtime for work and study

Specifications

Battery TypeLithium-Ion

Questions about this item

What voltage and capacity does the BK03XL battery deliver?

It supplies 11.55 V and 41.7 Wh, matching the original specification for the HP Pavilion 14-ba series.

Does this battery fit the Pavilion x360 14-ba chassis?

Yes — it is listed as compatible with the Pavilion x360 14-ba and replaces part numbers 916366-421, 916366-541, 916811-855, HSTNN-LB7S and HSTNN-UB7G.

What is the correct way to install the BK03XL and what step do people often miss?

Power off the laptop, disconnect the AC adapter, remove the bottom case screws, detach the old battery connector before lifting it out, connect the new battery, then reassemble; the step most often missed is unplugging the old battery connector first.

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